Ignax rosenberg



' compounds,-

. T UNITED STATES PATEN OFFICE.

IGNAZ nosnxnnno, or BIEBRICI'I, GERMANY, 'ASSI'GNOR 'ro KALLE & co, or SAME P ACE.

- BLUISH- SPECIFICATION forming w om t-m Patent SCA LET DY E.

588,180, dated August 17, 1897.

I Application filed J\ ly 29,18l6. Sria1No.6 00,979. SilecimensJ Patented in England May 7 1895,1lo. 9,103, and in France n zz,139510141625;

#1?) all when-t it may concern; V Do it kuownithat I, lonnz Rosnxenno, re- 'sidiug at ,lliebrielnon-the-Rhine, in the Ein- Qpire of Germany, have invented certain newand useful 'I-mpro-\-'emeuts in the Manufacture of Az o Dyestuffs from Monamins and 1.3Naphthyleuediainin Mono and .Di Sulfo- Acids,f( for which i have obtained Letters Patent in England, No. 9,103, dated May 7, 1895,

1595,) of scription. V I,

'By combining the 1. mono and di sulfo-aci'ls described in my simultaneous application, filed July 29, 1896, Serial No. 600,978, and characterized by con= taining' the two anti position'with diazotized monamins, .I have succeeded in producing a new class of yery 23; Val u able dyestuffs ranging in-shade front yellow to rah-brown, violet. All

these dyestuffs are l at tin ctorial'po-wer, hy their great infinity anelf even an d dark 0 the fiber, by producing bri shadesnvhicharec ffast washing, and 311k resancl.. whie"- faster against acids than the dyestuffs pi dueed f m other Forthe production oif'thenew'eoloring tors which are the sat ct of the present pli cation 1 courllrine in! e her alkaline or acct-ice diamin inono or'di Slllftl tlClfli thylenedigpniii-monosiarlt'oacid git-es with diazo tized' amlin or sullaniiio'acid an --oi-'m1ge;

with xvhdiina rod-orange; with pzh auitrani- Lima brownish-yeilo\r3 with alpha and om I naphihylamin and'naphthionie acid, red wool threstuils; with dehydrothio paratoluidin snlfo acid lljRl-LlQll-yd rothio met-ax ylirlin sulfoand in France, No. 347,626; dated May 32, which thelfollowing is an enact de-,

3 naphthylonediamin do groups in meta or L3 distinguished by their 1 mpht'hylenediarn n sulfofine suspension -a coldaq'ueous of the diazo body is run into solution of twentyfive kilos 1. 3, 6 naphthylenediamin-monosulfoeacid. and twenty kilos of soda-ash? lhe soformed coloring-matter having the formula 'NH, 1 QJL-iSM Q-XM is precipitated bycom-inon in fineneedles or le'aflets'of yellowish bronz e.

It is filtered of the salt liquor, pressed,- and dried. After being dried an d ground it represents areddish-bro\vnbronzy powder, easily s0luble.in hot-water, insoluble in alcohol, soluble in conentra tedsulfuric acid giving on alkaline yellow solution which quickly'turns brown under'the, influence n1ordai ited cottona bright bluishscarlet shade which i'sfast'against and 'lighti'and which is only very byfacidsi New. whali- I with violet coloration, 6 5 reduction with zinc-dust aof the air. It. dies on imthe action of soap '70 little altered claim is i 1. 'lhe'process of producing newazo dyestuil's consisting in the combination of molecular ln'op'ortions of diazot-ized monamins with 1. 3 naphthy-lenedian insulfo-aoids.

thyletiediamin or *staillize in fine needles oi l'e'afiets of yellow o rhining 1110 I rocessofproclucingthespecificd-yestuffhhv njgtheformulaz q I r 1 I m1, 1 x'=.\f-o,,n,.Nn, 37

leeularproportions of diazo- I dehydrothio .paratOluidin. monosulfov y U 1,3.6 naphthylenediamin-monovsulfo-aieid'substantially as described. i

A; dyestuff derivable from a 1.3 naphsulfo compound, which will bronze, forming after drying and grinding brownish-red' bronzy powders,

easily soluble inhotiwater, insoluble inalcohol, soluble in concentrated sulfuric acid witl'r violet coloration, giving on alkaline reduetiol'l with zincdust, yellow browrt under on urrruordante solutions, which quickly turnthe influence of the air,

dyeing d cotton a bright bluish sear let, whichisliade is fast against the action of ble in concentrated sulfuric acid with violet; soap and lig'ht substgntially as described. coloration, giving on alkaline reduction with 4. The new dyestuff with the formula: zinc-dnst a yellow solution which quickly (1) (tiurnsbrown umller tbs intfluenc; Qfh air; 5 yein on unmor' an e co tone rig uis l 2 CH12NS(SO3Na) gi g scarle which shade is fast against the action 3 a of soap and light; and having the qualities which dyestulf is producible by combining substantially as described. I molecular proportions-of diazotized dehydro In testimony whereof I- have signed my, 10 tfiio paratolilidin sulfo-acid with 1.3.6 naphname to this specification in the presence of": thylenediamin monosulfo icid; and which two subscribing witnesses crystallizesiin fineneedles or leafletsof y e l-' u v v IGNAZ ROSENBERG.

lowish bronzeformingafter drying'and grind- Witnesses: lnga brownish-red bronzy powder, easily sol- FRIEDRICH KRECKE,

2-5 ublein hot water, insoluble in alcohol, selul-tv HEINRICH WIscHLER. 

